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How to Know if a SIM Card Is 2G or 3G | eHow
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日期：2025-05-16
A 3G SIM card offers the fastest mobile service for cell phone users. Most newer cell phones offer 3G service with their cell phone plans. You won't be able to tell if you have a 3G SIM card just by using your cell phone. In order to tell if you have a 3G...看更多
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